丘疹　　

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a small inflamed elevation of skin that is nonsuppurative (as in chicken pox)

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丘疹(きゅうしん),(皮被にできる)小さな吹き出物

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/06/07 01:31:37」(JST)

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Papule and Plaque

Fibrous papule of the nose

A papule is a circumscribed, solid elevation of skin with no visible fluid, varying in size from a pinhead to 1 cm.^[1]^{[nb 1]} They can be brown, purple, pink or red in color, and can cluster into a papular rash. The papules may open when scratched and become infected and crusty.^[2]

Papules may have different shapes and are sometimes associated with other features such as crusts or scales.

Causal diseases

There are many skin diseases which develop papules, such as Lichen planus, a skin disease which classically forms polygonal, purple papules.^{[citation needed]}

Footnotes

^ With regard to the quote "...varying in size from a pinhead to 1cm," depending on which text is referenced, some authors state the cutoff between a papule and a plaque as 0.5cm, not 1cm, while others state an entirely different measurement. Therefore, for this article, the 1cm cutoff is used which is discussed in Andrews' Diseases of the Skin: Clinical Dermatology (see references), a work considered by some dermatologists as an authority on this subject matter. See Lack of Standardization for complete discussion.

References

^ James, William; Berger, Timothy; Elston, Dirk (2005) Andrews' Diseases of the Skin: Clinical Dermatology (10th ed.). Saunders. Page 15. ISBN 0-7216-2921-0.
^ "papule" at Dorland's Medical Dictionary

UpToDate Contents

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1. 皮膚疾患診断へのアプローチ approach to dermatologic diagnosis
2. 毛孔性紅色粃糠疹 pityriasis rubra pilaris
3. 急性痘瘡状苔癬状粃糠疹（PLEVA） pityriasis lichenoides et varioliformis acuta pleva
4. 疱疹状皮膚炎 dermatitis herpetiformis
5. Sweet症候群（急性熱性好中球皮膚症）：病因、臨床症状、および診断 sweet syndrome acute febrile neutrophilic dermatosis pathogenesis clinical manifestations and diagnosis

English Journal

Images in clinical medicine: African tick-bite fever after a game-hunting expedition.

Bohaty BR1, Hebert AA.
The New England journal of medicine.N Engl J Med.2015 Mar 5;372(10):e14. doi: 10.1056/NEJMicm1312910.
A 15-year-old girl was admitted to the hospital with a persistent fever, headache, and myalgia. A solitary, painful, black, crusted ulcer with a peripheral erythematous halo was noted in the left popliteal fossa; the ulcer had begun as an asymptomatic erythematous papule 1 week previously.
PMID 25738687

Painless penile papule.

Marszalek RM1, Bae-Harboe YS2, Mahalingam M3, Masterpol K4.
The Journal of family practice.J Fam Pract.2015 Mar;64(3):185-8.
In immunocompetent patients, secondary syphilis is characterized by fever, malaise, lymphadenopathy, moth-eaten alopecia, focal neurologic findings, condyloma lata, mucocutaneous aphthae, and a generalized papulosquamous eruption. After 3 to 12 weeks, the secondary infection spontaneously disappears
PMID 25789346

Pyoderma gangrenosum in association with microscopic colitis, idiopathic hypereosinophilic syndrome, selective IgE deficiency and diabetes mellitus.

Riyaz N1, Sasidharanpillai S, Rahima S, Bindu V, Shaan M, Raghavan NT, Mohan L, Janardhanan AK.
Clinical and experimental dermatology.Clin Exp Dermatol.2015 Feb 22. doi: 10.1111/ced.12618. [Epub ahead of print]
Pyoderma gangrenosum (PG) is a neutrophilic dermatosis of unknown aetiology. We report a 27-year-old male patient with diabetes, who presented with a nonhealing ulcer on the left leg, pruritic hyperpigmented papules distributed over the trunk and limbs, and chronic diarrhoea. He had eosinophilia, lo
PMID 25704069

Japanese Journal

ソラフェニブ投与中に keratoacanthoma を合併した肝細胞癌の一例

大濱日出子,井倉技,今井康陽 [他],福田和人,澤井良之,小来田幸世,牧野祐紀,大畑千佳,角村由紀子,黒川正典
肝臓 52(12), 787-789, 2011-12-25
… He presented with a hyperkeratotic papule on right forearm 6 months after starting sorafenib. …
NAID 10030240706

A case of usual (basaloid)-type vulvar intraepithelial neoplasia that failed to respond to imiquimod cream: clinical implications.

Shiozaki Takaya,Tabata Tsutomu,Toriyabe Kuniaki,Motohashi Takashi,Kondo Eiji,Tanida Kouji,Okugawa Toshiharu,Sagawa Norimasa
International journal of clinical oncology 16(5), 610-612, 2011-10-01
… Four weeks after the start of treatment, a fingertip-sized papule was detected at the patient's vaginal introitus. …
NAID 10030247135